The Really Right Stuff Tripod Apex Adapter TA-4-AA3 enables your Versa Series 4 Mk2 Tripod to accept Versa Series 3 75mm Video Bowls, leveling bases, and quick columns. Crafted from CNC-machined 6061 aircraft-grade aluminum, it ensures durability and reliability. The adapter features an integrated SureGrip platform for secure attachment, enhancing compatibility and functionality. Lightweight yet sturdy, it offers precision engineering for greater photography and videography experiences. Really Right Stuff Tripod Apex Adapter TA-4-AA3 in Black